KR950004870A - Wireless Telephone Device Using Infrared - Google Patents

Abstract

The present invention is to enable the use of infrared wired telephones as a short-range wireless telephone to ensure the mobility of the wireless telephone and to solve the limitation of the interference and the frequency of the wireless telephone using a high frequency infrared infrared According to an aspect of the present invention, there is provided a wireless telephone apparatus, comprising: first transmission means for receiving a voice signal transmitted from a telephone station, modulating the received voice signal to a carrier frequency, and then transmitting the infrared signal in the infrared; First receiving means for demodulating the infrared rays transmitted from the means into original sound signal signals and transmitting them to the handset; second transmitting means for modulating the voice obtained from the transmitter to the carrier frequency and then transmitting the infrared rays; A second number which demodulates the transmitted infrared rays into the original audio signal and sends them to the telephone station It is accomplished by comprising a means.

Description

Wireless Telephone Device Using Infrared

Since this is an open matter, no full text was included.

3A to 3D are block diagrams of a wireless telephone apparatus using infrared rays of the present invention, (a) and (b) are diagrams of wireless transmitters and receivers of a transmitter and a receiver, and (c) and (d) are telephones. This is a block diagram of the wireless transmitter and receiver. 4 is a perspective view of a landline telephone of FIG.

Claims (5)

A first transmitting means for receiving a voice signal transmitted from a trunk line and modulating the received voice signal to a carrier frequency, and then transmitting the infrared signal, and demodulating the infrared rays transmitted from the first transmitting means into an original voice signal. A first transmitting means for transmitting, a second transmitting means for modulating the voice obtained from the transmitter to a carrier frequency, and then transmitting the infrared rays, and an infrared ray transmitted by the second transmitting means by demodulating the original voice signal to the telephone station A wireless telephone apparatus using infrared rays comprising a second receiving means. 2. The apparatus according to claim 1, wherein the first transmitting means comprises: a first amplifier for amplifying a voice signal transmitted from a telephone station to a predetermined level; and a first for converting an analog voice signal output from the first amplifier into a digital voice signal. An analog / digital converter, a first modulator for modulating and outputting a digital voice signal output from the first analog / digital converter to a carrier frequency generated by a first carrier frequency generator, and in the first modulator A first light emitting diode driver for outputting an infrared light emitting diode driving signal according to the output frequency, and a first infrared light emitting part for emitting infrared light by emitting light according to the signal output from the first light emitting diode driving unit Cordless Telephone Device. 2. The apparatus of claim 1, wherein the first receiving means comprises: a first infrared receiver for receiving infrared rays transmitted from the first transmitter and converting the infrared rays into electrical signals and amplifying the signals obtained by the first infrared receiver to a predetermined level; A second amplifier for outputting the signal, a first band filter for filtering the signal output from the second amplification unit to a predetermined band, and a first waveform for shaping and outputting a waveform of a frequency output from the first band filter. A waveform demodulator, a first demodulator for demodulating and outputting the signal output from the first waveform demodulator into an original audio signal, and a digital demodulator for converting the digital audio signal output from the first demodulator into an analog audio signal; A digital / analog converter and a third amplifier for amplifying the analog audio signal obtained by the first digital / analog converter to a predetermined level and outputting the signal to a receiver. Using a load of the infrared, it characterized the radio telephone apparatus. 2. The second transmitting means of claim 1, further comprising: a fourth amplifier for amplifying and outputting the analog voice signal input from the transmitter to a predetermined level; and converting the analog voice signal output from the fourth amplifier into a digital voice signal. A second analog / digital converting unit, a second modulator for modulating and outputting a digital voice signal output from the second analog / digital converting unit to a carrier frequency generated by a second carrier frequency generating unit, and the second And a second light emitting diode driver for outputting an infrared light emitting diode driving signal according to a frequency output from the modulator, and a second infrared light emitting unit for emitting infrared light by emitting light according to the signal output from the second light emitting diode driving unit. Wireless phone device using an infrared ray. 2. The apparatus of claim 1, wherein the second receiving means comprises: a second infrared receiver for receiving infrared rays transmitted from the second transmitting means, converting them into electrical signals, and outputting the signals; A fifth amplifying unit for amplifying and outputting a second band filter unit for filtering and outputting a frequency output from the fifth amplifying unit to a predetermined band, and outputting a waveform of a frequency output from the second band filter unit A second waveform shaping section, a second demodulation section for demodulating and outputting a signal output from the second waveform shaping section to an original audio signal, and converting a digital audio signal obtained from the second demodulation section into an analog audio signal. A second digital / analog converting section and an analog audio signal output from the second digital / analog converting section to a predetermined level and Infrared wireless telephone device, characterized in that consisting of a sixth amplifier. ※ Note: The disclosure is based on the initial application.